[PATCH] serial imx.c: fix CTS trigger level lower to avoid lost chars

[Russell King - ARM Linux]

On Thu, Jan 21, 2010 at 11:06:53PM +0100, Wolfram Sang wrote:
> CCing linux-serial
> 
> On Thu, Jan 21, 2010 at 10:26:03PM +0100, Valentin Longchamp wrote:
> > The imx CTS trigger level is left at its reset value that is 32
> > chars. Since the RX FIFO has 32 entries, when CTS is raised, the
> > FIFO already is full. However, some serial port devices first empty
> > their TX FIFO before stopping when CTS is raised, resulting in lost
> > chars.
> 
> ? Isn't that a flaw of the other side? Have you spotted other serial drivers
> doing the same as your patch?

Arguably, but it's common behaviour of 16550A's and similar.